function cart(url) {
	window.open(url,'CartWin','width=960,height=400,scrollbars,location,resizable,status');
}


function validateForm() {

	/* Create an array of the form fields */
	validatefields = new Array()
	validatefields[0] = 'name'
	validatefields[1] = 'email'
	validatefields[2] = 'subject'
	validatefields[3] = 'message'

	/* Loop through the fields */
	for (i=0;i<validatefields.length;i++) {
		var field = validatefields[i];
		
		/* Check if any of the fields are blank */
		if (document.getElementById(field).value == '') {
			document.getElementById(field+'-label').style.color = '#f00';
			document.getElementById(field).focus();
			error_message(field);
			return false;
		} else {
			document.getElementById(field+'-label').style.color = '#333';
		}
		
		/* Check if the email address is valid */
		if (field == 'email') {
			from = /^[+\w-.&]+\@[\w-.&]+\.\w+/;
			if (!from.test(document.getElementById(field).value)) {
				document.getElementById(field+'-label').style.color = '#f00';
				document.getElementById(field).focus();
				error_message('valid_'+field);
				return false;
			} else {
				document.getElementById(field+'-label').style.color = '#333';
			}			
		}
	}
}

function error_message(field) {
	switch(field) {
		case 'name': {
			alert('Please enter your name.');
			break;
		}
		case 'email': {
			alert('Please enter your email address.');
			break;
		}
		case 'valid_email': {
			alert('Please enter a valid email address.');
			break;
		}
		case 'subject': {
			alert('Please enter the subject of your message.');
			break;
		}
		case 'message': {
			alert('Please enter your message.');
			break;
		}
	}
}